Metallic spool



V. ODQUIST METALLIC SPOOL July 12, 1927.

Filed May 14, 1923 VICTOR ODQUIST, OF YONKERS, NEW YORK, ASSIGNOR T0 AMERICAN GEN COMP OF NEW YO, N. Y., A CORPORATION OF NEW JERSEY.

Application filed may 14,

The present invention relates to metal spools and has as a principal ob ect the provision of a spool of such strength as to beadapted to hold silk thread without yielding tothe unusual strains to which it is subjected when said thread is wound thereon. In practice, considerable difficulty has been experienced with the types of metal spools used for this purpose, due to lack of strength and to' relative movement between the parts employed. It will be understood that the thread must be wound under considerable tension and the elasticity in silk thread, when multiplied many thousands of times by the many loops whenin position, results in a very powerful breaking strain. All other types of metal spools, of which I am aware, have, for this reason, been inadequate, not only for silk thread, but have not even proved to be of suflicient strength to hold a good grade of cotton thread. As a consequence, wooden spools have been customarily employed for this type of thread and the preesnt invention is directed to the provision of a metallic spool which will be as strong as a wooden spool, or stronger, and which can be economically manufactured.

A further object of the invention is the provision of a relationship between the parts of a metallic spool which will prevent the crowding of the thread between the core and end members, or walls, and in which said walls are positively held against relative movement with respect to the other parts employed.

Other objects and advantages of the invention will be apparent as it is better understood from the following description, which, taken in connection with the accompanying drawings, discloses a preferred embodiment thereof.

Referring to the drawings,

Figure 1 is a side elevation, partially broken away and shown in section, of a metallic spool embodying the principles of my invention;

Fig. 2 is an end elevation thereof; and

Fig. 3 is a transverse section, taken sub stantially on the line 3-3 in Fig. 1.

The spool which I have illustrated in the drawings, as a preferred exemplification-of the invention, comprises a main exterior core member 21 and a second and smaller core member 22, to which are secured, respectively, end walls 23 and reinforcing rattle $2001..

1923. Serial No. 638,720.

ly, leaving a smooth exterior surface upon I which the thread may be wound.

The walls 23 are secured to the ends of the core member 21 by means of interengaged flanges, as shown in section in Fig. 1. Said wall members 23 are centrally apertured and adapted to fit over the member 21. The inner edges of said wall members are provided with flanges 27, which are bent from the plane of the wall proper on a sharp line of bend 28 and which engage the surface of the core member throughout a considerable area. As will later appear, these flanges are held tightly against said core member and the construction just referred to effectually prevents the packing of the thread between the parts. The flange 27 is turned upwardly at its outer edge, as shown at 29, and the edge 31 of the core member is curled about the upwardly turned part of the flange whereby'the wall parts are held firmly in place.

The interior core member 22 is of cylindrical form, the edges 32 thereof being merely brought to adjacent relationship, as shown in Figs. 2 and 3. The ends of said member 22 are flanged outwardly,ras indicated at 33, and engage the inner extremities 34 of thereinforcing plates 24, which latter are formed with circular channels 35 fitting over the curled edges 29 of the core member 21, whereby the inner edges of said reinforcing plates are connected with eachother independently of the core 21. Said reinforcing plates 24 are beveled inwardly, as indicated at 36, beyond the point of engagement with the core member 21 and the outer edges 37 thereof are curled within correspondingly curled edges 38 on the wall members 23. The extremities of said edges bear against the outer surface of the plates 24, forming a closed seam, or bead, and, since the edges 37 and 38 are curled together, they are each firmly held against relative movement. In this manner, an interlocking relationship is provided, which prevents the creeping of one member upon the other and this, in large measure, contributes to the ad- I 4 vantageous results which I obtain with the present construction, which under practical tests, has been found to fully meet the requirements of service.

It is thought that the invention and many of its attendant advantages will be understood from the foregoing description, and it will be apparent that various changes may be made in the form, construct-ion and arrangement of the parts without departing from the spirit and scope of the invention, or sacrificing all of its material advantages, the form hereinbefore described being merely a preferred embodiment thereof.

I claim:

1. A metal spool comprising in combination an outer corehaving its end edges flanged outwardly, end Walls encircling the core and interlocked with said flanged memes edges, reinforcing plates having their margins interengaged with the margins of said end walls, and bearing inwardly against the end flanges of the outer core, and an inner core fitting into said reinforcing plates and having end flanges engaging on the outer sides of the reinforcing plates.

2. A metal spool comprising in combination an outer core having lts end edges flanged outwardly, end Walls encircling the core at the inner sides of said flanged edges, reinforcing plates having their margins interengaged with margins of said end Walls and arranged and bearing a ainst the outer sides of said flanged edges 0 the outer core, and an inner core fitting into said reinforcing plates and having end flanges engaging on the outer sides of the reinforcing plates. VICTOR ODQUIST. 

